Abstract:

This report presents the results of the Tango project, which is a joint project with partners from Sweden (Swedish Museum of Natural History, Stockholm; and the Swedish Defence Research Institute, FOI) and Denmark (Aarhus Uni- versity). The background of the project was the change of the main shipping route into the Baltic (the T-route, or route Tango as it is often called) in 2020 and a desire to document the changes in the underwater soundscape and effects on marine life, in particular harbour porpoises (Phocoena phocoena). The project has been funded from several sources. The initial data collection was funded by the Nordic Council of Ministers and took place in cooperation with Tallinn Technical University. Further economic support to the Danish part of the project came from Danish Center for Marine Research, the European Maritime and Fisheries Fund (through a contract with the Danish Environmental Protection Agency) and the Danish Environmental Protection Agency (Vildtkontrakten). This report describes the results of the Danish monitoring and includes data from the Swedish monitoring for completeness. The data from the Swedish programs are described in details elsewhere (Lalander et al. 2022, Owen et al. in prep)

http://dce2.au.dk/pub/SR535.pdf